ENS 54978
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ENS Event | |
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10:19 Nov 2, 2020 | |
Title | Automatic Reactor Trip Due to Control Element Drive Mechanism Control System Timer Failure |
Event Description | On November 2, 2020, at 0419 CST, Waterford 3 experienced an automatic reactor trip due to a Control Element Drive Mechanism Control System timer failure while attempting to synchronize a second motor generator set. All control rods fully inserted.
The plant is currently in Mode 3 and stable with normal feedwater feeding and maintaining both Steam Generators. The NRC Senior Resident Inspector has been notified. The cause of the failure is still under investigation. |
Where | |
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Waterford ![]() Louisiana (NRC Region 4) | |
Reporting | |
10 CFR 50.72(b)(2)(iv)(B), RPS Actuation | |
Time - Person (Reporting Time:+-2.15 h-0.0896 days <br />-0.0128 weeks <br />-0.00295 months <br />) | |
Opened: | Kevin Hale 08:10 Nov 2, 2020 |
NRC Officer: | Jeffrey Whited |
Last Updated: | Nov 2, 2020 |
54978 - NRC Website
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Unit 3 | |
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Reactor critical | Critical |
Scram | A/R |
Before | Power Operation (42 %) |
After | Hot Standby (0 %) |
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